The Model H816BID Bi-directional Economical Whole House Video Distribution Amplifier distributes CATV or antenna signals to up to six televisions. Two of the six outputs feature additional signal gain for longer RG-6 coax cable runs. The Model H816BID is bi-directional to support two-way cable systems. The H816BID IS compatible with broadcast DTV Television signals on the VHF & UHF bands. The H816BID is NOT compatible with digital or analog CATV signals above 806 MHz (CATV channels 127-140).